CN211877735U

CN211877735U - Pole piece test fixture of lithium ion battery

Info

Publication number: CN211877735U
Application number: CN202020626014.5U
Authority: CN
Inventors: 刘彪; 范常清; 劳华亮; 陈少士
Original assignee: Huizhou Super Polypower Battery Co ltd
Current assignee: Huizhou Super Polypower Battery Co ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-11-06
Anticipated expiration: 2030-04-23

Abstract

The utility model relates to a lithium ion battery's pole piece test fixture, including the anchor clamps base, set up guide rail on the anchor clamps base, with guide rail sliding connection's removal frame and fix the ruling blade on removing the frame, a ruling blade side is the cockscomb structure, ruling blade suspension in anchor clamps base top and cockscomb structure side towards the anchor clamps base. The utility model provides a lithium ion battery's pole piece test fixture replaces the manual bare-handed check of drawing and detects to solve battery defective rate height, customer complaint risk, the loss of company, cost increase and profit decline scheduling problem have detect accuracy, advantage such as the cost is lower, simple structure, easy processing.

Description

Pole piece test fixture of lithium ion battery

Technical Field

The utility model relates to a battery field especially relates to a lithium ion battery's pole piece test fixture.

Background

The lithium ion battery is generally assembled by components or materials such as a positive plate, a negative plate, a diaphragm, a tab, adhesive paper, electrolyte, an aluminum plastic film and the like. The positive and negative pole pieces are formed by coating positive and negative raw materials on a current collector through homogenate to form a sheet, and then rolling, slitting and welding pole lugs; the pole piece is generally divided into two regions, a feedstock application region and a current collector region.

The lithium ion battery is charged and discharged by moving back and forth between a positive electrode and a negative electrode through raw material lithium ions on a positive plate; therefore, the raw material has a crucial influence on the performance of the battery, and the pole piece is particularly important as the aggregate of the raw materials. At present, when a battery manufacturer manufactures pole pieces, due to uneven control levels of production (such as coating, rolling and other processes), the problems that raw materials on the pole pieces often fall off and the like are caused, the problems are mainly caused in the rear-end processes of finished battery charge and discharge tests and the like, and the problems are basically not discovered visually in the front-end processes of coating, rolling and the like. In order to avoid the powder falling problem, the pole piece is manufactured into a battery, the performance of the battery is influenced, and further, the company loss is caused, and the pole piece needs to be discovered and improved in advance. At present, a common method for a battery manufacturer is as follows: a check marking instrument is manually used by a detection person, a check marking test is carried out on a standard pole piece to be detected, and the degree of powder falling in the check is compared with a standard sample plate, so that the adhesion grade of the raw material is judged to confirm whether the pole piece is qualified.

However, because the detection personnel manually and freehand lattice-cutting tests, the operation method has the following problems:

1. the adhesion force grade is inaccurate, so that misjudgment is caused: the manual bare-handed lattice cutting test of detection personnel results in different lattice cutting depths due to inconsistent force degree of the detection personnel, misjudgment is easy to occur, defective pole pieces and batteries are formed, the performance of the batteries is affected, customer complaints are caused, and company losses are caused;

2. the production efficiency is low: manual bare-handed lattice-cutting test is carried out by a tester, the time is long, and the detection efficiency is not high;

the problems can improve the defective rate of the battery, influence the performance of the battery, cause customer complaints and cause company loss; and low production efficiency, which results in increased company cost and reduced profit.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a lithium ion battery's pole piece test fixture replaces the manual bare-handed check that draws and detects to solve battery defective rate height, customer complaint risk, loss of company, cost increase and profit decline scheduling problem have detect advantages such as accurate, the cost is lower, simple structure, easy processing.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a lithium ion battery's pole piece test fixture, includes the anchor clamps base, sets up guide rail on the anchor clamps base, with guide rail sliding connection's removal frame and fix the graticule blade on removing the frame, a graticule blade side is the cockscomb structure, graticule blade suspension in anchor clamps base top and cockscomb structure side towards the anchor clamps base.

Preferably, a groove for accommodating the pole piece to be tested is dug in the surface of one side of the clamp base.

Preferably, the number of the guide rails is two, and the two guide rails are respectively positioned at two sides of the groove.

Preferably, the area of the grid cutting blade far away from the serrated side edge is fixedly connected with the movable frame.

Preferably, the movable frame comprises a guide sleeve in sliding sleeve connection with the guide rail and a movable plate connected with the guide sleeve.

Preferably, the surface of one side of the moving plate is fixed with the grid cutting blade, and the surface of the other side of the moving plate is fixed with the handle.

Preferably, the plane of the lattice-cutting blade intersects the plane of the base of the jig.

Preferably, the sawtooth-shaped side edge of the grid cutting blade is abutted against the pole piece to be tested in the groove.

Preferably, the groove is further provided with a groove.

Preferably, the clamp base is made of an aluminum alloy material, the moving frame is made of an aluminum alloy material, the guide rail is made of a carbon steel material, and the grid cutting blade is made of a carbon steel material.

The utility model discloses compare in prior art's beneficial effect and be:

the utility model discloses a pole piece test fixture is made by accurate machining equipment, and the size is accurate, and the location is accurate. The standard pole piece plate to be detected is placed into the groove of the clamp base, the movable frame handle is held by hands, the grid cutting blade fixed on the movable frame handle is driven to freely slide back and forth on the guide rail, and grid cutting detection is carried out on the raw material of the pole piece. And comparing the powder falling degree of the pole piece with a standard sample plate so as to judge the grade of the adhesion force of the raw material and confirm whether the pole piece is qualified or not.

The pole piece testing clamp has the advantages of accurate detection, lower cost, simple structure and easy processing, and can completely replace manual bare-handed grid marking detection.

Drawings

Fig. 1 is a structural diagram of a pole piece testing fixture of a lithium ion battery in an embodiment of the present invention.

Fig. 2 is a structural diagram of the pole piece testing fixture of the lithium ion battery in an embodiment of the present invention.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be described in further detail with reference to specific embodiments and drawings.

Referring to fig. 1-2, an embodiment of the present invention includes:

the utility model provides a lithium ion battery's pole piece test fixture, includes anchor clamps base 1, sets up guide rail 2 on anchor clamps base 1, with guide rail 2 sliding connection's removal frame 3 and fix the ruling blade 4 on removing frame 3, 4 one sides of ruling blade are the cockscomb structure, ruling blade 4 suspension in anchor clamps base 1 top and cockscomb structure side 10 towards anchor clamps base 1.

A groove 5 for containing a pole piece to be tested is dug in the surface of one side of the clamp base 1. The number of the guide rails 2 is two, and the two guide rails 2 are respectively positioned at two sides of the groove 5. The area of the cutting blade 4 far away from the serrated side edge 10 is fixedly connected with the movable frame 3. The movable frame 3 comprises a guide sleeve 6 which is in sliding sleeve connection with the guide rail 2 and a movable plate 7 which is connected with the guide sleeve 6. The surface of one side of the moving plate 7 is fixed with the grid cutting blade 4, and the surface of the other side is fixed with the handle 8. The plane of the cutting blade 4 is intersected with the plane of the clamp base 1. The serrated side edges 10 on the dicing blade 4 abut the pole pieces to be tested in the groove 5. Grooves 9 are also provided on the grooves 5. The clamp base 1 is made of an aluminum alloy material, the moving frame 3 is made of an aluminum alloy material, the guide rail 2 is made of a carbon steel material, and the grid cutting blade 4 is made of a carbon steel material.

The lithium ion battery pole piece test fixture is suitable for detecting the adhesion of raw pole piece materials of the lithium ion battery, can be matched with standard pole piece plates of various battery models, and is a universal fixture. The standard pole piece plate to be detected is placed into the groove of the clamp base, the movable frame handle is held by hands, the grid cutting blade fixed on the movable frame handle is driven to freely slide back and forth on the guide rail, and grid cutting detection is carried out on the raw material of the pole piece. And comparing the powder falling degree of the pole piece with a standard sample plate so as to judge the grade of the adhesion force of the raw material and confirm whether the pole piece is qualified or not.

The pole piece testing clamp has the following beneficial effects:

1. the fraction defective of the pole piece is as follows: the detection personnel manually detect the defect rate of 5.0 percent; the defect rate is reduced to 0.5% by using the pole piece test fixture, and the defect rate is obviously reduced;

2. poor cost of the pole piece:

manual detection: the output per model per month is 10W, and the reject ratio is 5.0 percent, namely 5000 defective pole pieces; each bad pole piece cost is 2.0 yuan, i.e., battery pole piece bad cost =5000 (only) × 2.0 (yuan) × 12 months =120000 yuan/1 year.

Testing a clamp: the output per model per month is 10W, and the reject ratio is 0.5 percent, namely 500 poor pole pieces; each bad pole piece cost is calculated as 2.0 yuan, i.e. the bad cost of the battery pole piece =500 (only) × 2.0 (yuan) × 12 months =12000 yuan/1 year.

Pole piece test fixture cost: the service life is 1 year according to the calculation of 400 yuan of each clamp;

and (3) cost comparison: the cost of the poor pole piece is greatly reduced, and 107600 yuan/year is saved.

In the description of the present invention, it is to be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims

1. The utility model provides a lithium ion battery's pole piece test fixture, its characterized in that includes anchor clamps base (1), sets up guide rail (2) on anchor clamps base (1), with guide rail (2) sliding connection's removal frame (3) and fix ruling grid blade (4) on removing frame (3), a ruling grid blade (4) side is the cockscomb structure, ruling grid blade (4) suspension in anchor clamps base (1) top and cockscomb structure side (10) towards anchor clamps base (1).

2. The pole piece testing fixture of the lithium ion battery as claimed in claim 1, wherein a groove (5) for accommodating a pole piece to be tested is dug on one side surface of the fixture base (1).

3. The pole piece testing fixture of the lithium ion battery as claimed in claim 1, wherein the number of the guide rails (2) is two, and the two guide rails (2) are respectively located at two sides of the groove (5).

4. The pole piece testing fixture of the lithium ion battery as claimed in claim 1, wherein the area of the grid cutting blade (4) far away from the serrated side edge (10) is fixedly connected with the movable frame (3).

5. The pole piece testing fixture of the lithium ion battery according to claim 1, wherein the moving frame (3) comprises a guide sleeve (6) slidably sleeved with the guide rail (2), and a moving plate (7) connected with the guide sleeve (6).

6. The pole piece testing fixture of the lithium ion battery as claimed in claim 5, wherein the grid cutting blade (4) is fixed on one side surface of the moving plate (7), and the handle (8) is fixed on the other side surface.

7. The pole piece test fixture of the lithium ion battery according to claim 1, wherein the plane of the grid cutting blade (4) is intersected with the plane of the fixture base (1).

8. The pole piece testing fixture of the lithium ion battery as claimed in claim 2, wherein the serrated side edges (10) on the lattice-cutting blade (4) are abutted on the pole piece to be tested in the groove (5).

9. The pole piece testing fixture of the lithium ion battery as claimed in claim 2, wherein the groove (5) is further provided with a groove (9).

10. The pole piece testing fixture of the lithium ion battery as claimed in any one of claims 1 to 9, wherein the fixture base (1) is made of an aluminum alloy material, the moving frame (3) is made of an aluminum alloy material, the guide rail (2) is made of a carbon steel material, and the lattice cutting blade (4) is made of a carbon steel material.